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Title / Construct and install an earth retaining structure
Level / 4 / Credits / 12
Purpose / People credited with this unit standard are able to: confirm requirements for constructing and installing an earth retaining structure; construct and install an earth retaining structure; and clear the worksite on completion of work.
Classification / Infrastructure Works > Infrastructure Civil Works
Available grade / Achieved
Explanatory notes
1 The following legislation, regulations and codes of practice must be complied with:
Health and Safety in Employment Act 1992; and Health and Safety in Employment Regulations 1995;
Resource Management Act 1991
Conservation Act 1987
Historic Places Act 1993
Accidental Discovery Protocol
Local Authority regulations
Local Authority Engineering Codes of Practice (ECOP).
2 Assessment against this unit standard must take place in a workplace environment. Assessment parameters will depend on company and site specific equipment, procedures, and practices. Practices must reflect industry best practice and comply with legislative requirements.
3 Assessment of this unit standard does not include the construction of retaining walls. Constructing retaining walls is covered in unit standards 13026, and 13062.
This unit standard refers to the construction and installation of earth retaining structures for the purpose of alterations to existing land surfaces to suit the activity proposed; such as in the construction of dams, batters, canals, water race, causeways, berms, bunds, changing the topography of the land for the purpose of land development, subdivisions, roadway construction, and waterways.
4 Evidence is required for the construction and installation of one earth retaining structure using one of the following methods: cantilever wall, anchor wall, mechanically stabilised earth (MSE), gabion mesh, soil nailing.
5 Definitions
Company requirements include the policy, procedures, and methodologies of the company. They include legislative and regulatory requirements applicable to the company and/or a specific site. Requirements are documented in the company’s health and safety plans, environment management plans (EMP), traffic management plans (TMP), inspection and test plans (ITP), survey and set-out, contract work programmes, quality assurance programmes, policies, and procedural documents.
Contract specifications include plans, diagrams, and special technical conditions. They do not include special administrative conditions.
Outcomes and evidence requirements
Outcome 1
Confirm requirements for constructing and installing an earth retaining structure.
Evidence requirements
1.1 Type of earth retaining structure to be constructed and installed is confirmed in accordance with contract specifications.
1.2 Site and site conditions are confirmed in accordance with company requirements.
Range location, drainage, environmental conditions, hazards
1.3 Resources are confirmed in accordance with company requirements.
Range materials, plant and equipment, work force.
Outcome 2
Construct and install an earth retaining structure.
Evidence requirements
2.1 Site is set up in accordance with company requirements and contract specifications.
2.2 Earth retaining structure is constructed and installed in accordance with company requirements and contract specifications.
2.3 Drainage systems are installed in accordance with company requirements and contract specifications.
2.4 Backfilling is placed and compacted in accordance with company requirements, contract specifications and local authority regulations.
2.5 As-built plans are completed in accordance with company requirements and contract specifications.
Outcome 3
Clear the worksite on completion of work.
Evidence requirements
3.1 Site is cleared on completion of work in accordance with company requirements.
Range materials, traffic management, plant and equipment, any other temporary structures.
Planned review date / 31 December 2020Status information and last date for assessment for superseded versions
Process / Version / Date / Last Date for Assessment /Registration / 1 / 21 May 2015 / N/A
Consent and Moderation Requirements (CMR) reference / 0101
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA, before they can report credits from assessment against unit standards or deliver courses of study leading to that assessment.
Industry Training Organisations must be granted consent to assess against standards by NZQA before they can register credits from assessment against unit standards.
Providers and Industry Training Organisations, which have been granted consent and which are assessing against unit standards must engage with the moderation system that applies to those standards.
Requirements for consent to assess and an outline of the moderation system that applies to this standard are outlined in the Consent and Moderation Requirements (CMR). The CMR also includes useful information about special requirements for organisations wishing to develop education and training programmes, such as minimum qualifications for tutors and assessors, and special resource requirements.
Comments on this unit standard
Please contact the Infrastructure ITO if you wish to suggest changes to the content of this unit standard.
Infrastructure ITOSSB Code 101813 / Ó New Zealand Qualifications Authority 2015